Cougar case bumps need tape-up insulation?

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Hello. I have a Cougar case which has bumps instead of motherboard spacers. This site says one should "tape up the bumpers to insulate them" before screwing the motherboard to it. Is that something necessary?
http://www.techpowerup.com/reviews/Cougar/MX500/4.html

Also, this cougar case comes with 2 motherboard "footholds", a brass-looking thingie that can go in 2 holes without bumps..., but the mobo has no holes for those, are they just for support or what? And is it necessary to use those? Kind of a beginner question, but still. Thanks a lot.

Btw, my board is ATX, h97, but has only 6 screw-holes. Most other atx-boards I see (like z87/97) have 8, is that normal or? Perhaps h97 is just smaller in size.
 
Nothing would need to be done to the case if your motherboard is full ATX size (sounds more like µ-ATX though). If your motherboard is micro-ATX, then you would use the two brass "footholds" (we call them standoffs) in the holes provided for them. If you can link your motherboard, or be more specific about make and model, we can let you know just what you'll need, where
 
The bumps act as standoffs. In this case the 'bumps' are somewhat larger and may have wider surface area which may be why they said to tape them. Even taping them the mounting screws will make contact between the motherboard screw holes (which are usually surrounded by a small ring of metal for additional grounding) and the back plate. If the motherboard doesn't have the proper spacing for the 'footholds' then don't worry about them and no need to use them. Some cases that use integrated standoffs (bumps) as opposed to threaded barrel-nut screw in standoffs have what appear to be pegs that screw into the backplate and line up with a couple mounting holes in the board to line it up for an easier install. Most cases use a variety of mounting hole patterns so they're compatible with different sized motherboard standards - atx, matx etc.
 

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motherboard is h97-plus azus, it say 12 x 8,6 inch and it says ATX form factor. It's not micro. But some other ATX boards say 12 x 9,6 inch (2-3 cm wider, hence the extra 2 screw holes i don't have, maybe those boards have more extras).

https://www.asus.com/Motherboards/H97PLUS/specifications/
 
You wont need to use the two extra standoffs with the ATX board.
as far as whether tape would be needed, you'll notice that around each mounting hole on the motherboard there is a circle, that circle represents a "safe" zone under which there is only grounding. Look at the bumps (stamped standoffs) and see if they are larger than the circles on the motherboard. If they are smaller than the circle, then no tape would be needed but if the mounting bump is larger around than the circle, then tape would be a very good idea.
 

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The mounting holes on the board (6 of them) have those european-union-flag-like small metal dots around the hole, I guess that is the "grounding" you mean. Beyound those metal dots is a wider marked circle, yes. I think the bumps on the case are wider than that... What should I do then, tape up with black insulation band the entire bump? Or just the area of the bump which is wider than this circle on the motherboard screw hole? Jesus, this should be easier.
 

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